Hello Ibrahim,
Thanks for contacting WPDM Support.
However, to solve the issue please make sure the php upload max file size is set properly in your servers.
You can check that from Dashboard > Tools > Site Health > Info > Server
. If that is lower, you have to increase that by following this or by contacting your hosting support.
After doing so, if the problem still persists, please provide temporary admin access in a private reply.
Thanks